Releasable and retrievable vascular filter system
First Claim
1. A guidewireless vascular filter system for insertion into a lumen of a vessel, said system comprising:
- a) a free standing, guidewireless filter support structure comprising a proximal portion, a distal portion, and a plurality of struts extending therebetween, said struts further comprising proximal portions and distal portions, said filter having a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding to a diameter substantially equal to the diameter of said lumen and to be placed in a generally sealing relationship with said lumen;
b) a porous filter membrane connected to said filter distal portion and said plurality of struts;
c) deploying and releasing means operatively associated with said filter support structure, said deploying and releasing means causing said filter to be positioned in said lumen of said vessel, and causing said filter to achieve said larger second diameter;
d) anti-migration means associated with said filter support structure, said anti-migration means causing said filter to remain substantially stationary in said lumen of said vessel; and
e) retrieving means operatively associated with said filter support structure, said retrieving means allowing recapture of said filter, causing said filter to achieve said smaller first diameter, and allowing removal of said filter from said lumen.
2 Assignments
0 Petitions
Accused Products
Abstract
A releasable and retrievable vascular filter system comprising a filter, a porous filter membrane attached to the filter, and an anti-migration feature for causing the filter to remain substantially stationary in the lumen of the vessel during the clinical procedure. The releasable and retrievable vascular filter system minimizes or substantially eliminates filter movement during the procedure, which may result in damage to the lumen, and/or the release of embolic particulates captured within the filter. The releasable and retrievable vascular filter system also allows for guidewire exchanges, which may be necessary for successful completion of the clinical procedure.
266 Citations
17 Claims
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1. A guidewireless vascular filter system for insertion into a lumen of a vessel, said system comprising:
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a) a free standing, guidewireless filter support structure comprising a proximal portion, a distal portion, and a plurality of struts extending therebetween, said struts further comprising proximal portions and distal portions, said filter having a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding to a diameter substantially equal to the diameter of said lumen and to be placed in a generally sealing relationship with said lumen;
b) a porous filter membrane connected to said filter distal portion and said plurality of struts;
c) deploying and releasing means operatively associated with said filter support structure, said deploying and releasing means causing said filter to be positioned in said lumen of said vessel, and causing said filter to achieve said larger second diameter;
d) anti-migration means associated with said filter support structure, said anti-migration means causing said filter to remain substantially stationary in said lumen of said vessel; and
e) retrieving means operatively associated with said filter support structure, said retrieving means allowing recapture of said filter, causing said filter to achieve said smaller first diameter, and allowing removal of said filter from said lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification